Demonstrators chant slogans supporting Egyptian President Mohammed Morsi during a rally in Tahrir Square in Cairo on Friday. Khalil Hamra/AP hide caption

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A municipal worker cleans a sidewalk Tuesday at the site of recent clashes between protesters and security forces near the Interior Ministry in Cairo Muhammed Muheisen/AP Photo hide caption

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One year ago, Wael Ghonim spoke with reporters in Cairo's Tahrir Square, as protests there continued. Khaled Desouki /AFP/Getty Images hide caption

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Wael Ghonim talking with reporters on Feb. 8, 2011, in Cairo's Tahrir Square as protests there continued. Khaled Desouki /AFP/Getty Images hide caption

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Photographer Moises Saman captured this shot of two activists in Hama, Syria. Saman and journalist Anthony Shadid entered the city for several days last July. The rest of Saman's images can be found here. Moises Saman /The New York Times hide caption

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Feb. 4: Anti-government protesters held a sign referencing the Facebook social networking website that was important in organizing protesters in Tahrir Square. Chris Hondros/Getty Images hide caption

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In this file photo, Egyptians celebrate the news of the resignation of Egyptian President Hosni Mubarak on Feb. 11 in Tahrir Square. Tara Todras-Whitehill/AP hide caption

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